class_docstr: This is the matplotlib based GUI for a single analysis
  It assumes the analysis is simple image data (this could be abstracted)
docstr: Redraw the whole canvas
docstr_tok: ["Redraw","the","whole","canvas"]
code: def force_refresh(self):
      """Redraw the whole canvas"""
      fig_size = self.fig.get_size_inches()
      self.fig.set_size_inches(fig_size)
      self.fig.canvas.draw()
  
file_path: nptsne/demos/ExtendedHSNEDemo/CompositeImageViewer.py
imports: import numpy
  import matplotlib.pyplot
  import matplotlib.style
  from matplotlib.backends.backend_qt5agg import FigureCanvas
  from matplotlib.figure import Figure
label_desc: Use image node_id 4 for calling the CompositeImageViewer obj's underlying member method code with example usage: obj.force_refresh() without return types